/**
 * @file
 * Socket API (to be used from non-TCPIP threads)
 */

/*
 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 *
 * This file is part of the lwIP TCP/IP stack.
 *
 * Author: Adam Dunkels <adam@sics.se>
 *
 */

#ifndef LWIP_HDR_SOCKETS_H
#define LWIP_HDR_SOCKETS_H

#include "lwip/opt.h"

#if LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */

#include "lwip/ip_addr.h"
#include "lwip/netif.h"
#include "lwip/err.h"
#include "lwip/inet.h"
#include "lwip/errno.h"

#include <string.h>

#ifdef __cplusplus
extern "C"
{
#endif

/* If your port already typedef's sa_family_t, define SA_FAMILY_T_DEFINED
   to prevent this code from redefining it. */
#if !defined(sa_family_t) && !defined(SA_FAMILY_T_DEFINED)
    typedef u8_t sa_family_t;
#endif
/* If your port already typedef's in_port_t, define IN_PORT_T_DEFINED
   to prevent this code from redefining it. */
#if !defined(in_port_t) && !defined(IN_PORT_T_DEFINED)
    typedef u16_t in_port_t;
#endif

#if LWIP_IPV4
    /* members are in network byte order */
    struct sockaddr_in
    {
        u8_t sin_len;
        sa_family_t sin_family;
        in_port_t sin_port;
        struct in_addr sin_addr;
#define SIN_ZERO_LEN 8
        char sin_zero[SIN_ZERO_LEN];
    };
#endif /* LWIP_IPV4 */

#if LWIP_IPV6
    struct sockaddr_in6
    {
        u8_t sin6_len;             /* length of this structure    */
        sa_family_t sin6_family;   /* AF_INET6                    */
        in_port_t sin6_port;       /* Transport layer port #      */
        u32_t sin6_flowinfo;       /* IPv6 flow information       */
        struct in6_addr sin6_addr; /* IPv6 address                */
        u32_t sin6_scope_id;       /* Set of interfaces for scope */
    };
#endif /* LWIP_IPV6 */

    struct sockaddr
    {
        u8_t sa_len;
        sa_family_t sa_family;
        char sa_data[14];
    };

    struct sockaddr_storage
    {
        u8_t s2_len;
        sa_family_t ss_family;
        char s2_data1[2];
        u32_t s2_data2[3];
#if LWIP_IPV6
        u32_t s2_data3[3];
#endif /* LWIP_IPV6 */
    };

/* If your port already typedef's socklen_t, define SOCKLEN_T_DEFINED
   to prevent this code from redefining it. */
#if !defined(socklen_t) && !defined(SOCKLEN_T_DEFINED)
    typedef u32_t socklen_t;
#endif

#if !defined IOV_MAX
#define IOV_MAX 0xFFFF
#elif IOV_MAX > 0xFFFF
#error "IOV_MAX larger than supported by LwIP"
#endif /* IOV_MAX */

#if !defined(iovec)
    struct iovec
    {
        void* iov_base;
        size_t iov_len;
    };
#endif

    struct msghdr
    {
        void* msg_name;
        socklen_t msg_namelen;
        struct iovec* msg_iov;
        int msg_iovlen;
        void* msg_control;
        socklen_t msg_controllen;
        int msg_flags;
    };

/* struct msghdr->msg_flags bit field values */
#define MSG_TRUNC  0x04
#define MSG_CTRUNC 0x08

    /* RFC 3542, Section 20: Ancillary Data */
    struct cmsghdr
    {
        socklen_t cmsg_len; /* number of bytes, including header */
        int cmsg_level;     /* originating protocol */
        int cmsg_type;      /* protocol-specific type */
    };
/* Data section follows header and possible padding, typically referred to as
      unsigned char cmsg_data[]; */

/* cmsg header/data alignment. NOTE: we align to native word size (double word
size on 16-bit arch) so structures are not placed at an unaligned address.
16-bit arch needs double word to ensure 32-bit alignment because socklen_t
could be 32 bits. If we ever have cmsg data with a 64-bit variable, alignment
will need to increase long long */
#define ALIGN_H(size) (((size) + sizeof(long) - 1U) & ~(sizeof(long) - 1U))
#define ALIGN_D(size) ALIGN_H(size)

#define CMSG_FIRSTHDR(mhdr) \
    ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? (struct cmsghdr*)(mhdr)->msg_control : (struct cmsghdr*)NULL)

#define CMSG_NXTHDR(mhdr, cmsg)                                                                       \
    (((cmsg) == NULL) ? CMSG_FIRSTHDR(mhdr)                                                           \
                      : (((u8_t*)(cmsg) + ALIGN_H((cmsg)->cmsg_len) + ALIGN_D(sizeof(struct cmsghdr)) \
                          > (u8_t*)((mhdr)->msg_control) + (mhdr)->msg_controllen)                    \
                             ? (struct cmsghdr*)NULL                                                  \
                             : (struct cmsghdr*)((void*)((u8_t*)(cmsg) + ALIGN_H((cmsg)->cmsg_len)))))

#define CMSG_DATA(cmsg)    ((void*)((u8_t*)(cmsg) + ALIGN_D(sizeof(struct cmsghdr))))

#define CMSG_SPACE(length) (ALIGN_D(sizeof(struct cmsghdr)) + ALIGN_H(length))

#define CMSG_LEN(length)   (ALIGN_D(sizeof(struct cmsghdr)) + length)

/* Set socket options argument */
#define IFNAMSIZ NETIF_NAMESIZE
    struct ifreq
    {
        char ifr_name[IFNAMSIZ]; /* Interface name */
    };

/* Socket protocol types (TCP/UDP/RAW) */
#define SOCK_STREAM 1
#define SOCK_DGRAM  2
#define SOCK_RAW    3

/*
 * Option flags per-socket. These must match the SOF_ flags in ip.h (checked in init.c)
 */
#define SO_REUSEADDR 0x0004 /* Allow local address reuse */
#define SO_KEEPALIVE 0x0008 /* keep connections alive */
#define SO_BROADCAST 0x0020 /* permit to send and to receive broadcast messages (see IP_SOF_BROADCAST option) */

/*
 * Additional options, not kept in so_options.
 */
#define SO_DEBUG        0x0001 /* Unimplemented: turn on debugging info recording */
#define SO_ACCEPTCONN   0x0002 /* socket has had listen() */
#define SO_DONTROUTE    0x0010 /* Unimplemented: just use interface addresses */
#define SO_USELOOPBACK  0x0040 /* Unimplemented: bypass hardware when possible */
#define SO_LINGER       0x0080 /* linger on close if data present */
#define SO_DONTLINGER   ((int)(~SO_LINGER))
#define SO_OOBINLINE    0x0100 /* Unimplemented: leave received OOB data in line */
#define SO_REUSEPORT    0x0200 /* Unimplemented: allow local address & port reuse */
#define SO_SNDBUF       0x1001 /* Unimplemented: send buffer size */
#define SO_RCVBUF       0x1002 /* receive buffer size */
#define SO_SNDLOWAT     0x1003 /* Unimplemented: send low-water mark */
#define SO_RCVLOWAT     0x1004 /* Unimplemented: receive low-water mark */
#define SO_SNDTIMEO     0x1005 /* send timeout */
#define SO_RCVTIMEO     0x1006 /* receive timeout */
#define SO_ERROR        0x1007 /* get error status and clear */
#define SO_TYPE         0x1008 /* get socket type */
#define SO_CONTIMEO     0x1009 /* Unimplemented: connect timeout */
#define SO_NO_CHECK     0x100a /* don't create UDP checksum */
#define SO_BINDTODEVICE 0x100b /* bind to device */

    /*
     * Structure used for manipulating linger option.
     */
    struct linger
    {
        int l_onoff;  /* option on/off */
        int l_linger; /* linger time in seconds */
    };

/*
 * Level number for (get/set)sockopt() to apply to socket itself.
 */
#define SOL_SOCKET 0xfff /* options for socket level */

#define AF_UNSPEC  0
#define AF_INET    2
#if LWIP_IPV6
#define AF_INET6 10
#else /* LWIP_IPV6 */
#define AF_INET6 AF_UNSPEC
#endif /* LWIP_IPV6 */
#define PF_INET      AF_INET
#define PF_INET6     AF_INET6
#define PF_UNSPEC    AF_UNSPEC

#define IPPROTO_IP   0
#define IPPROTO_ICMP 1
#define IPPROTO_TCP  6
#define IPPROTO_UDP  17
#if LWIP_IPV6
#define IPPROTO_IPV6   41
#define IPPROTO_ICMPV6 58
#endif /* LWIP_IPV6 */
#define IPPROTO_UDPLITE 136
#define IPPROTO_RAW     255

/* Flags we can use with send and recv. */
#define MSG_PEEK 0x01 /* Peeks at an incoming message */
#define MSG_WAITALL \
    0x02 /* Unimplemented: Requests that the function block until the full amount of data requested can be returned */
#define MSG_OOB                                                                                              \
    0x04 /* Unimplemented: Requests out-of-band data. The significance and semantics of out-of-band data are \
            protocol-specific */
#define MSG_DONTWAIT 0x08 /* Nonblocking i/o for this operation only */
#define MSG_MORE     0x10 /* Sender will send more */
#define MSG_NOSIGNAL                                                                                                   \
    0x20 /* Uninmplemented: Requests not to send the SIGPIPE signal if an attempt to send is made on a stream-oriented \
            socket that is no longer connected. */

/*
 * Options for level IPPROTO_IP
 */
#define IP_TOS     1
#define IP_TTL     2
#define IP_PKTINFO 8

#if LWIP_TCP
/*
 * Options for level IPPROTO_TCP
 */
#define TCP_NODELAY   0x01 /* don't delay send to coalesce packets */
#define TCP_KEEPALIVE 0x02 /* send KEEPALIVE probes when idle for pcb->keep_idle milliseconds */
#define TCP_KEEPIDLE  0x03 /* set pcb->keep_idle  - Same as TCP_KEEPALIVE, but use seconds for get/setsockopt */
#define TCP_KEEPINTVL 0x04 /* set pcb->keep_intvl - Use seconds for get/setsockopt */
#define TCP_KEEPCNT   0x05 /* set pcb->keep_cnt   - Use number of probes sent for get/setsockopt */
#endif                     /* LWIP_TCP */

#if LWIP_IPV6
/*
 * Options for level IPPROTO_IPV6
 */
#define IPV6_CHECKSUM 7  /* RFC3542: calculate and insert the ICMPv6 checksum for raw sockets. */
#define IPV6_V6ONLY   27 /* RFC3493: boolean control to restrict AF_INET6 sockets to IPv6 communications only. */
#endif                   /* LWIP_IPV6 */

#if LWIP_UDP && LWIP_UDPLITE
/*
 * Options for level IPPROTO_UDPLITE
 */
#define UDPLITE_SEND_CSCOV 0x01 /* sender checksum coverage */
#define UDPLITE_RECV_CSCOV 0x02 /* minimal receiver checksum coverage */
#endif                          /* LWIP_UDP && LWIP_UDPLITE*/

#if LWIP_MULTICAST_TX_OPTIONS
/*
 * Options and types for UDP multicast traffic handling
 */
#define IP_MULTICAST_TTL  5
#define IP_MULTICAST_IF   6
#define IP_MULTICAST_LOOP 7
#endif /* LWIP_MULTICAST_TX_OPTIONS */

#if LWIP_IGMP
/*
 * Options and types related to multicast membership
 */
#define IP_ADD_MEMBERSHIP  3
#define IP_DROP_MEMBERSHIP 4

    typedef struct ip_mreq
    {
        struct in_addr imr_multiaddr; /* IP multicast address of group */
        struct in_addr imr_interface; /* local IP address of interface */
    } ip_mreq;
#endif /* LWIP_IGMP */

#if LWIP_IPV4
    struct in_pktinfo
    {
        unsigned int ipi_ifindex; /* Interface index */
        struct in_addr ipi_addr;  /* Destination (from header) address */
    };
#endif /* LWIP_IPV4 */

#if LWIP_IPV6_MLD
/*
 * Options and types related to IPv6 multicast membership
 */
#define IPV6_JOIN_GROUP      12
#define IPV6_ADD_MEMBERSHIP  IPV6_JOIN_GROUP
#define IPV6_LEAVE_GROUP     13
#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP

    typedef struct ipv6_mreq
    {
        struct in6_addr ipv6mr_multiaddr; /*  IPv6 multicast addr */
        unsigned int ipv6mr_interface;    /*  interface index, or 0 */
    } ipv6_mreq;
#endif /* LWIP_IPV6_MLD */

/*
 * The Type of Service provides an indication of the abstract
 * parameters of the quality of service desired.  These parameters are
 * to be used to guide the selection of the actual service parameters
 * when transmitting a datagram through a particular network.  Several
 * networks offer service precedence, which somehow treats high
 * precedence traffic as more important than other traffic (generally
 * by accepting only traffic above a certain precedence at time of high
 * load).  The major choice is a three way tradeoff between low-delay,
 * high-reliability, and high-throughput.
 * The use of the Delay, Throughput, and Reliability indications may
 * increase the cost (in some sense) of the service.  In many networks
 * better performance for one of these parameters is coupled with worse
 * performance on another.  Except for very unusual cases at most two
 * of these three indications should be set.
 */
#define IPTOS_TOS_MASK    0x1E
#define IPTOS_TOS(tos)    ((tos) & IPTOS_TOS_MASK)
#define IPTOS_LOWDELAY    0x10
#define IPTOS_THROUGHPUT  0x08
#define IPTOS_RELIABILITY 0x04
#define IPTOS_LOWCOST     0x02
#define IPTOS_MINCOST     IPTOS_LOWCOST

/*
 * The Network Control precedence designation is intended to be used
 * within a network only.  The actual use and control of that
 * designation is up to each network. The Internetwork Control
 * designation is intended for use by gateway control originators only.
 * If the actual use of these precedence designations is of concern to
 * a particular network, it is the responsibility of that network to
 * control the access to, and use of, those precedence designations.
 */
#define IPTOS_PREC_MASK            0xe0
#define IPTOS_PREC(tos)            ((tos) & IPTOS_PREC_MASK)
#define IPTOS_PREC_NETCONTROL      0xe0
#define IPTOS_PREC_INTERNETCONTROL 0xc0
#define IPTOS_PREC_CRITIC_ECP      0xa0
#define IPTOS_PREC_FLASHOVERRIDE   0x80
#define IPTOS_PREC_FLASH           0x60
#define IPTOS_PREC_IMMEDIATE       0x40
#define IPTOS_PREC_PRIORITY        0x20
#define IPTOS_PREC_ROUTINE         0x00

/*
 * Commands for ioctlsocket(),  taken from the BSD file fcntl.h.
 * lwip_ioctl only supports FIONREAD and FIONBIO, for now
 *
 * Ioctl's have the command encoded in the lower word,
 * and the size of any in or out parameters in the upper
 * word.  The high 2 bits of the upper word are used
 * to encode the in/out status of the parameter; for now
 * we restrict parameters to at most 128 bytes.
 */
#if !defined(FIONREAD) || !defined(FIONBIO)
#define IOCPARM_MASK 0x7fU        /* parameters must be < 128 bytes */
#define IOC_VOID     0x20000000UL /* no parameters */
#define IOC_OUT      0x40000000UL /* copy out parameters */
#define IOC_IN       0x80000000UL /* copy in parameters */
#define IOC_INOUT    (IOC_IN | IOC_OUT)
    /* 0x20000000 distinguishes new &
       old ioctl's */
#define _IO(x, y)     ((long)(IOC_VOID | ((x) << 8) | (y)))

#define _IOR(x, y, t) ((long)(IOC_OUT | ((sizeof(t) & IOCPARM_MASK) << 16) | ((x) << 8) | (y)))

#define _IOW(x, y, t) ((long)(IOC_IN | ((sizeof(t) & IOCPARM_MASK) << 16) | ((x) << 8) | (y)))
#endif /* !defined(FIONREAD) || !defined(FIONBIO) */

#ifndef FIONREAD
#define FIONREAD _IOR('f', 127, unsigned long) /* get # bytes to read */
#endif
#ifndef FIONBIO
#define FIONBIO _IOW('f', 126, unsigned long) /* set/clear non-blocking i/o */
#endif

/* Socket I/O Controls: unimplemented */
#ifndef SIOCSHIWAT
#define SIOCSHIWAT _IOW('s', 0, unsigned long) /* set high watermark */
#define SIOCGHIWAT _IOR('s', 1, unsigned long) /* get high watermark */
#define SIOCSLOWAT _IOW('s', 2, unsigned long) /* set low watermark */
#define SIOCGLOWAT _IOR('s', 3, unsigned long) /* get low watermark */
#define SIOCATMARK _IOR('s', 7, unsigned long) /* at oob mark? */
#endif

/* commands for fnctl */
#ifndef F_GETFL
#define F_GETFL 3
#endif
#ifndef F_SETFL
#define F_SETFL 4
#endif

/* File status flags and file access modes for fnctl,
   these are bits in an int. */
#ifndef O_NONBLOCK
#define O_NONBLOCK 1 /* nonblocking I/O */
#endif
#ifndef O_NDELAY
#define O_NDELAY O_NONBLOCK /* same as O_NONBLOCK, for compatibility */
#endif
#ifndef O_RDONLY
#define O_RDONLY 2
#endif
#ifndef O_WRONLY
#define O_WRONLY 4
#endif
#ifndef O_RDWR
#define O_RDWR (O_RDONLY | O_WRONLY)
#endif

#ifndef SHUT_RD
#define SHUT_RD   0
#define SHUT_WR   1
#define SHUT_RDWR 2
#endif

/* FD_SET used for lwip_select */
#ifndef FD_SET
#undef FD_SETSIZE
/* Make FD_SETSIZE match NUM_SOCKETS in socket.c */
#define FD_SETSIZE          MEMP_NUM_NETCONN
#define LWIP_SELECT_MAXNFDS (FD_SETSIZE + LWIP_SOCKET_OFFSET)
#define FDSETSAFESET(n, code)                                                                    \
    do                                                                                           \
    {                                                                                            \
        if (((n)-LWIP_SOCKET_OFFSET < MEMP_NUM_NETCONN) && (((int)(n)-LWIP_SOCKET_OFFSET) >= 0)) \
        {                                                                                        \
            code;                                                                                \
        }                                                                                        \
    } while (0)
#define FDSETSAFEGET(n, code) \
    (((n)-LWIP_SOCKET_OFFSET < MEMP_NUM_NETCONN) && (((int)(n)-LWIP_SOCKET_OFFSET) >= 0) ? (code) : 0)
#define FD_SET(n, p)                                 \
    FDSETSAFESET(                                    \
        n,                                           \
        (p)->fd_bits[((n)-LWIP_SOCKET_OFFSET) / 8] = \
            (u8_t)((p)->fd_bits[((n)-LWIP_SOCKET_OFFSET) / 8] | (1 << (((n)-LWIP_SOCKET_OFFSET) & 7))))
#define FD_CLR(n, p)                                 \
    FDSETSAFESET(                                    \
        n,                                           \
        (p)->fd_bits[((n)-LWIP_SOCKET_OFFSET) / 8] = \
            (u8_t)((p)->fd_bits[((n)-LWIP_SOCKET_OFFSET) / 8] & ~(1 << (((n)-LWIP_SOCKET_OFFSET) & 7))))
#define FD_ISSET(n, p) \
    FDSETSAFEGET(n, (p)->fd_bits[((n)-LWIP_SOCKET_OFFSET) / 8] & (1 << (((n)-LWIP_SOCKET_OFFSET) & 7)))
#define FD_ZERO(p) memset((void*)(p), 0, sizeof(*(p)))

    typedef struct fd_set
    {
        unsigned char fd_bits[(FD_SETSIZE + 7) / 8];
    } fd_set;

#elif FD_SETSIZE < (LWIP_SOCKET_OFFSET + MEMP_NUM_NETCONN)
#error "external FD_SETSIZE too small for number of sockets"
#else
#define LWIP_SELECT_MAXNFDS FD_SETSIZE
#endif /* FD_SET */

/* poll-related defines and types */
/* @todo: find a better way to guard the definition of these defines and types if already defined */
#if !defined(POLLIN) && !defined(POLLOUT)
#define POLLIN   0x1
#define POLLOUT  0x2
#define POLLERR  0x4
#define POLLNVAL 0x8
/* Below values are unimplemented */
#define POLLRDNORM 0x10
#define POLLRDBAND 0x20
#define POLLPRI    0x40
#define POLLWRNORM 0x80
#define POLLWRBAND 0x100
#define POLLHUP    0x200
    typedef unsigned int nfds_t;
    struct pollfd
    {
        int fd;
        short events;
        short revents;
    };
#endif

/** LWIP_TIMEVAL_PRIVATE: if you want to use the struct timeval provided
 * by your system, set this to 0 and include <sys/time.h> in cc.h */
#ifndef LWIP_TIMEVAL_PRIVATE
#define LWIP_TIMEVAL_PRIVATE 1
#endif

#if LWIP_TIMEVAL_PRIVATE
    struct timeval
    {
        long tv_sec;  /* seconds */
        long tv_usec; /* and microseconds */
    };
#endif /* LWIP_TIMEVAL_PRIVATE */

#define lwip_socket_init()                 /* Compatibility define, no init needed. */
    void lwip_socket_thread_init(void);    /* LWIP_NETCONN_SEM_PER_THREAD==1: initialize thread-local semaphore */
    void lwip_socket_thread_cleanup(void); /* LWIP_NETCONN_SEM_PER_THREAD==1: destroy thread-local semaphore */

#if LWIP_COMPAT_SOCKETS == 2
/* This helps code parsers/code completion by not having the COMPAT functions as defines */
#define lwip_accept      accept
#define lwip_bind        bind
#define lwip_shutdown    shutdown
#define lwip_getpeername getpeername
#define lwip_getsockname getsockname
#define lwip_setsockopt  setsockopt
#define lwip_getsockopt  getsockopt
#define lwip_close       closesocket
#define lwip_connect     connect
#define lwip_listen      listen
#define lwip_recv        recv
#define lwip_recvmsg     recvmsg
#define lwip_recvfrom    recvfrom
#define lwip_send        send
#define lwip_sendmsg     sendmsg
#define lwip_sendto      sendto
#define lwip_socket      socket
#if LWIP_SOCKET_SELECT
#define lwip_select select
#endif
#if LWIP_SOCKET_POLL
#define lwip_poll poll
#endif
#define lwip_ioctl     ioctlsocket
#define lwip_inet_ntop inet_ntop
#define lwip_inet_pton inet_pton

#if LWIP_POSIX_SOCKETS_IO_NAMES
#define lwip_read   read
#define lwip_readv  readv
#define lwip_write  write
#define lwip_writev writev
#undef lwip_close
#define lwip_close     close
#define closesocket(s) close(s)
    int fcntl(int s, int cmd, ...);
#undef lwip_ioctl
#define lwip_ioctl  ioctl
#define ioctlsocket ioctl
#endif /* LWIP_POSIX_SOCKETS_IO_NAMES */
#endif /* LWIP_COMPAT_SOCKETS == 2 */

    int lwip_accept(int s, struct sockaddr* addr, socklen_t* addrlen);
    int lwip_bind(int s, const struct sockaddr* name, socklen_t namelen);
    int lwip_shutdown(int s, int how);
    int lwip_getpeername(int s, struct sockaddr* name, socklen_t* namelen);
    int lwip_getsockname(int s, struct sockaddr* name, socklen_t* namelen);
    int lwip_getsockopt(int s, int level, int optname, void* optval, socklen_t* optlen);
    int lwip_setsockopt(int s, int level, int optname, const void* optval, socklen_t optlen);
    int lwip_close(int s);
    int lwip_connect(int s, const struct sockaddr* name, socklen_t namelen);
    int lwip_listen(int s, int backlog);
    ssize_t lwip_recv(int s, void* mem, size_t len, int flags);
    ssize_t lwip_read(int s, void* mem, size_t len);
    ssize_t lwip_readv(int s, const struct iovec* iov, int iovcnt);
    ssize_t lwip_recvfrom(int s, void* mem, size_t len, int flags, struct sockaddr* from, socklen_t* fromlen);
    ssize_t lwip_recvmsg(int s, struct msghdr* message, int flags);
    ssize_t lwip_send(int s, const void* dataptr, size_t size, int flags);
    ssize_t lwip_sendmsg(int s, const struct msghdr* message, int flags);
    ssize_t lwip_sendto(int s, const void* dataptr, size_t size, int flags, const struct sockaddr* to, socklen_t tolen);
    int lwip_socket(int domain, int type, int protocol);
    ssize_t lwip_write(int s, const void* dataptr, size_t size);
    ssize_t lwip_writev(int s, const struct iovec* iov, int iovcnt);
#if LWIP_SOCKET_SELECT
    int lwip_select(int maxfdp1, fd_set* readset, fd_set* writeset, fd_set* exceptset, struct timeval* timeout);
#endif
#if LWIP_SOCKET_POLL
    int lwip_poll(struct pollfd* fds, nfds_t nfds, int timeout);
#endif
    int lwip_ioctl(int s, long cmd, void* argp);
    int lwip_fcntl(int s, int cmd, int val);
    const char* lwip_inet_ntop(int af, const void* src, char* dst, socklen_t size);
    int lwip_inet_pton(int af, const char* src, void* dst);

#if LWIP_COMPAT_SOCKETS
#if LWIP_COMPAT_SOCKETS != 2
/** @ingroup socket */
#define accept(s, addr, addrlen) lwip_accept(s, addr, addrlen)
/** @ingroup socket */
#define bind(s, name, namelen) lwip_bind(s, name, namelen)
/** @ingroup socket */
#define shutdown(s, how) lwip_shutdown(s, how)
/** @ingroup socket */
#define getpeername(s, name, namelen) lwip_getpeername(s, name, namelen)
/** @ingroup socket */
#define getsockname(s, name, namelen) lwip_getsockname(s, name, namelen)
/** @ingroup socket */
#define setsockopt(s, level, optname, opval, optlen) lwip_setsockopt(s, level, optname, opval, optlen)
/** @ingroup socket */
#define getsockopt(s, level, optname, opval, optlen) lwip_getsockopt(s, level, optname, opval, optlen)
/** @ingroup socket */
#define closesocket(s) lwip_close(s)
/** @ingroup socket */
#define connect(s, name, namelen) lwip_connect(s, name, namelen)
/** @ingroup socket */
#define listen(s, backlog) lwip_listen(s, backlog)
/** @ingroup socket */
#define recv(s, mem, len, flags) lwip_recv(s, mem, len, flags)
/** @ingroup socket */
#define recvmsg(s, message, flags) lwip_recvmsg(s, message, flags)
/** @ingroup socket */
#define recvfrom(s, mem, len, flags, from, fromlen) lwip_recvfrom(s, mem, len, flags, from, fromlen)
/** @ingroup socket */
#define send(s, dataptr, size, flags) lwip_send(s, dataptr, size, flags)
/** @ingroup socket */
#define sendmsg(s, message, flags) lwip_sendmsg(s, message, flags)
/** @ingroup socket */
#define sendto(s, dataptr, size, flags, to, tolen) lwip_sendto(s, dataptr, size, flags, to, tolen)
/** @ingroup socket */
#define socket(domain, type, protocol) lwip_socket(domain, type, protocol)
#if LWIP_SOCKET_SELECT
/** @ingroup socket */
#define select(maxfdp1, readset, writeset, exceptset, timeout) \
    lwip_select(maxfdp1, readset, writeset, exceptset, timeout)
#endif
#if LWIP_SOCKET_POLL
/** @ingroup socket */
#define poll(fds, nfds, timeout) lwip_poll(fds, nfds, timeout)
#endif
/** @ingroup socket */
#define ioctlsocket(s, cmd, argp) lwip_ioctl(s, cmd, argp)
/** @ingroup socket */
#define inet_ntop(af, src, dst, size) lwip_inet_ntop(af, src, dst, size)
/** @ingroup socket */
#define inet_pton(af, src, dst) lwip_inet_pton(af, src, dst)

#if LWIP_POSIX_SOCKETS_IO_NAMES
/** @ingroup socket */
#define read(s, mem, len) lwip_read(s, mem, len)
/** @ingroup socket */
#define readv(s, iov, iovcnt) lwip_readv(s, iov, iovcnt)
/** @ingroup socket */
#define write(s, dataptr, len) lwip_write(s, dataptr, len)
/** @ingroup socket */
#define writev(s, iov, iovcnt) lwip_writev(s, iov, iovcnt)
/** @ingroup socket */
#define close(s) lwip_close(s)
/** @ingroup socket */
#define fcntl(s, cmd, val) lwip_fcntl(s, cmd, val)
/** @ingroup socket */
#define ioctl(s, cmd, argp) lwip_ioctl(s, cmd, argp)
#endif /* LWIP_POSIX_SOCKETS_IO_NAMES */
#endif /* LWIP_COMPAT_SOCKETS != 2 */

#endif /* LWIP_COMPAT_SOCKETS */

#ifdef __cplusplus
}
#endif

#endif /* LWIP_SOCKET */

#endif /* LWIP_HDR_SOCKETS_H */
